PyTouhou: pytouhou/formats/exe.py annotate

annotate pytouhou/formats/exe.py @ 298:92a6fd2632f1

Improve heuristic to filter out non-game exes (like custom.exe).

author	Thibaut Girka <thib@sitedethib.com>
date	Tue, 06 Mar 2012 18:58:41 +0100
parents	2876c267be00
children	5492472963b0

rev	line source
229 5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	1 # -- encoding: utf-8 --
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	2 ##
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	3 ## Copyright (C) 2011 Thibaut Girka <thib@sitedethib.com>
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	4 ## Copyright (C) 2011 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	5 ##
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	6 ## This program is free software; you can redistribute it and/or modify
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	7 ## it under the terms of the GNU General Public License as published
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	8 ## by the Free Software Foundation; version 3 only.
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	9 ##
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	10 ## This program is distributed in the hope that it will be useful,
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	11 ## but WITHOUT ANY WARRANTY; without even the implied warranty of
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	13 ## GNU General Public License for more details.
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	14 ##
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	15
235 e59bd7979ddc Do a little cleanup, and fix PCB SHT usage. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: 230 diff changeset	16 from copy import copy
229 5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	17 from struct import Struct, unpack
235 e59bd7979ddc Do a little cleanup, and fix PCB SHT usage. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: 230 diff changeset	18
229 5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	19 from pytouhou.utils.pe import PEFile
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	20
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	21 from pytouhou.utils.helpers import get_logger
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	22
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	23 logger = get_logger(__name__)
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	24
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	25
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	26 SQ2 = 2. ** 0.5 / 2.
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	27
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	28
298 92a6fd2632f1 Improve heuristic to filter out non-game exes (like custom.exe). Thibaut Girka <thib@sitedethib.com> parents: 261 diff changeset	29 class InvalidExeException(Exception):
92a6fd2632f1 Improve heuristic to filter out non-game exes (like custom.exe). Thibaut Girka <thib@sitedethib.com> parents: 261 diff changeset	30 pass
92a6fd2632f1 Improve heuristic to filter out non-game exes (like custom.exe). Thibaut Girka <thib@sitedethib.com> parents: 261 diff changeset	31
92a6fd2632f1 Improve heuristic to filter out non-game exes (like custom.exe). Thibaut Girka <thib@sitedethib.com> parents: 261 diff changeset	32
229 5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	33 class Shot(object):
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	34 def __init__(self):
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	35 self.interval = 0
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	36 self.delay = 0
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	37 self.pos = (0., 0.)
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	38 self.hitbox = (0., 0.)
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	39 self.angle = 0.
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	40 self.speed = 0.
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	41 self.damage = 0
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	42 self.orb = 0
230 1c24a6d93c1b Improve find_character_defs, clean up a bit, and disable attack types 2 and 3 for now Thibaut Girka <thib@sitedethib.com> parents: 229 diff changeset	43 self.type = 0
229 5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	44 self.sprite = 0
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	45 self.unknown1 = None
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	46
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	47
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	48 class SHT(object):
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	49 def __init__(self):
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	50 #self.unknown1 = None
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	51 #self.bombs = 0.
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	52 #self.unknown2 = None
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	53 self.hitbox = 4.
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	54 self.graze_hitbox = 42.
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	55 self.autocollection_speed = 8.
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	56 self.item_hitbox = 38.
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	57 # No percentage_of_cherry_loss_on_die
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	58 self.point_of_collection = 128 #TODO: find the real default.
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	59 self.horizontal_vertical_speed = 0.
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	60 self.horizontal_vertical_focused_speed = 0.
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	61 self.diagonal_speed = 0.
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	62 self.diagonal_focused_speed = 0.
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	63 self.shots = {}
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	64
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	65
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	66 @classmethod
230 1c24a6d93c1b Improve find_character_defs, clean up a bit, and disable attack types 2 and 3 for now Thibaut Girka <thib@sitedethib.com> parents: 229 diff changeset	67 def find_character_defs(cls, pe_file):
1c24a6d93c1b Improve find_character_defs, clean up a bit, and disable attack types 2 and 3 for now Thibaut Girka <thib@sitedethib.com> parents: 229 diff changeset	68 """Generator returning the possible VA of character definition blocks.
1c24a6d93c1b Improve find_character_defs, clean up a bit, and disable attack types 2 and 3 for now Thibaut Girka <thib@sitedethib.com> parents: 229 diff changeset	69
1c24a6d93c1b Improve find_character_defs, clean up a bit, and disable attack types 2 and 3 for now Thibaut Girka <thib@sitedethib.com> parents: 229 diff changeset	70 Based on knowledge of the structure, it tries to find valid definition blocks
1c24a6d93c1b Improve find_character_defs, clean up a bit, and disable attack types 2 and 3 for now Thibaut Girka <thib@sitedethib.com> parents: 229 diff changeset	71 without embedding any copyrighted material or hard-coded offsets that would
1c24a6d93c1b Improve find_character_defs, clean up a bit, and disable attack types 2 and 3 for now Thibaut Girka <thib@sitedethib.com> parents: 229 diff changeset	72 only be useful for a specific build of the game.
1c24a6d93c1b Improve find_character_defs, clean up a bit, and disable attack types 2 and 3 for now Thibaut Girka <thib@sitedethib.com> parents: 229 diff changeset	73 """
1c24a6d93c1b Improve find_character_defs, clean up a bit, and disable attack types 2 and 3 for now Thibaut Girka <thib@sitedethib.com> parents: 229 diff changeset	74
229 5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	75 format = Struct('<4f2I')
230 1c24a6d93c1b Improve find_character_defs, clean up a bit, and disable attack types 2 and 3 for now Thibaut Girka <thib@sitedethib.com> parents: 229 diff changeset	76 data_section = [section for section in pe_file.sections
1c24a6d93c1b Improve find_character_defs, clean up a bit, and disable attack types 2 and 3 for now Thibaut Girka <thib@sitedethib.com> parents: 229 diff changeset	77 if section.Name.startswith('.data')][0]
1c24a6d93c1b Improve find_character_defs, clean up a bit, and disable attack types 2 and 3 for now Thibaut Girka <thib@sitedethib.com> parents: 229 diff changeset	78 text_section = [section for section in pe_file.sections
1c24a6d93c1b Improve find_character_defs, clean up a bit, and disable attack types 2 and 3 for now Thibaut Girka <thib@sitedethib.com> parents: 229 diff changeset	79 if section.Name.startswith('.text')][0]
229 5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	80 data_va = pe_file.image_base + data_section.VirtualAddress
230 1c24a6d93c1b Improve find_character_defs, clean up a bit, and disable attack types 2 and 3 for now Thibaut Girka <thib@sitedethib.com> parents: 229 diff changeset	81 data_size = data_section.SizeOfRawData
229 5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	82 text_va = pe_file.image_base + text_section.VirtualAddress
230 1c24a6d93c1b Improve find_character_defs, clean up a bit, and disable attack types 2 and 3 for now Thibaut Girka <thib@sitedethib.com> parents: 229 diff changeset	83 text_size = text_section.SizeOfRawData
229 5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	84
230 1c24a6d93c1b Improve find_character_defs, clean up a bit, and disable attack types 2 and 3 for now Thibaut Girka <thib@sitedethib.com> parents: 229 diff changeset	85 # Search the whole data segment for 4 successive character definitions
1c24a6d93c1b Improve find_character_defs, clean up a bit, and disable attack types 2 and 3 for now Thibaut Girka <thib@sitedethib.com> parents: 229 diff changeset	86 for addr in xrange(data_va, data_va + data_size, 4):
229 5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	87 for character_id in xrange(4):
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	88 pe_file.seek_to_va(addr + character_id * 24)
230 1c24a6d93c1b Improve find_character_defs, clean up a bit, and disable attack types 2 and 3 for now Thibaut Girka <thib@sitedethib.com> parents: 229 diff changeset	89 (speed1, speed2, speed3, speed4,
1c24a6d93c1b Improve find_character_defs, clean up a bit, and disable attack types 2 and 3 for now Thibaut Girka <thib@sitedethib.com> parents: 229 diff changeset	90 ptr1, ptr2) = format.unpack(pe_file.file.read(format.size))
229 5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	91
230 1c24a6d93c1b Improve find_character_defs, clean up a bit, and disable attack types 2 and 3 for now Thibaut Girka <thib@sitedethib.com> parents: 229 diff changeset	92 # Check whether the character's speed make sense,
1c24a6d93c1b Improve find_character_defs, clean up a bit, and disable attack types 2 and 3 for now Thibaut Girka <thib@sitedethib.com> parents: 229 diff changeset	93 # and whether the function pointers point to valid addresses
1c24a6d93c1b Improve find_character_defs, clean up a bit, and disable attack types 2 and 3 for now Thibaut Girka <thib@sitedethib.com> parents: 229 diff changeset	94 if not (all(0. < x < 10. for x in (speed1, speed2, speed3, speed4))
229 5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	95 and speed2 <= speed1
230 1c24a6d93c1b Improve find_character_defs, clean up a bit, and disable attack types 2 and 3 for now Thibaut Girka <thib@sitedethib.com> parents: 229 diff changeset	96 and 0 <= ptr1 - text_va < text_size - 8
1c24a6d93c1b Improve find_character_defs, clean up a bit, and disable attack types 2 and 3 for now Thibaut Girka <thib@sitedethib.com> parents: 229 diff changeset	97 and 0 <= ptr2 - text_va < text_size - 8):
229 5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	98 break
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	99
230 1c24a6d93c1b Improve find_character_defs, clean up a bit, and disable attack types 2 and 3 for now Thibaut Girka <thib@sitedethib.com> parents: 229 diff changeset	100 # So far, this character definition seems to be valid.
1c24a6d93c1b Improve find_character_defs, clean up a bit, and disable attack types 2 and 3 for now Thibaut Girka <thib@sitedethib.com> parents: 229 diff changeset	101 # Now, make sure the shoot function wrappers pass valid addresses
261 2876c267be00 Add heuristics to extract character data from the demo .exe. Thibaut Girka <thib@sitedethib.com> parents: 236 diff changeset	102
2876c267be00 Add heuristics to extract character data from the demo .exe. Thibaut Girka <thib@sitedethib.com> parents: 236 diff changeset	103 # Search for the “push” instruction
2876c267be00 Add heuristics to extract character data from the demo .exe. Thibaut Girka <thib@sitedethib.com> parents: 236 diff changeset	104 for i in xrange(20):
2876c267be00 Add heuristics to extract character data from the demo .exe. Thibaut Girka <thib@sitedethib.com> parents: 236 diff changeset	105 # Find the “push” instruction
2876c267be00 Add heuristics to extract character data from the demo .exe. Thibaut Girka <thib@sitedethib.com> parents: 236 diff changeset	106 pe_file.seek_to_va(ptr1 + i)
2876c267be00 Add heuristics to extract character data from the demo .exe. Thibaut Girka <thib@sitedethib.com> parents: 236 diff changeset	107 instr1, shtptr1 = unpack('<BI', pe_file.file.read(5))
2876c267be00 Add heuristics to extract character data from the demo .exe. Thibaut Girka <thib@sitedethib.com> parents: 236 diff changeset	108 pe_file.seek_to_va(ptr2 + i)
2876c267be00 Add heuristics to extract character data from the demo .exe. Thibaut Girka <thib@sitedethib.com> parents: 236 diff changeset	109 instr2, shtptr2 = unpack('<BI', pe_file.file.read(5))
2876c267be00 Add heuristics to extract character data from the demo .exe. Thibaut Girka <thib@sitedethib.com> parents: 236 diff changeset	110 if instr1 == 0x68 and instr2 == 0x68 and (0 <= shtptr1 - data_va < data_size - 12
2876c267be00 Add heuristics to extract character data from the demo .exe. Thibaut Girka <thib@sitedethib.com> parents: 236 diff changeset	111 and 0 <= shtptr2 - data_va < data_size - 12):
2876c267be00 Add heuristics to extract character data from the demo .exe. Thibaut Girka <thib@sitedethib.com> parents: 236 diff changeset	112 # It is unlikely this character record is not valid, but
2876c267be00 Add heuristics to extract character data from the demo .exe. Thibaut Girka <thib@sitedethib.com> parents: 236 diff changeset	113 # just to be sure, let's check the first SHT definition.
2876c267be00 Add heuristics to extract character data from the demo .exe. Thibaut Girka <thib@sitedethib.com> parents: 236 diff changeset	114 pe_file.seek_to_va(shtptr1)
2876c267be00 Add heuristics to extract character data from the demo .exe. Thibaut Girka <thib@sitedethib.com> parents: 236 diff changeset	115 nb_shots, power, shotsptr = unpack('<III', pe_file.file.read(12))
2876c267be00 Add heuristics to extract character data from the demo .exe. Thibaut Girka <thib@sitedethib.com> parents: 236 diff changeset	116 if (0 < nb_shots <= 1000
2876c267be00 Add heuristics to extract character data from the demo .exe. Thibaut Girka <thib@sitedethib.com> parents: 236 diff changeset	117 and 0 <= power < 1000
2876c267be00 Add heuristics to extract character data from the demo .exe. Thibaut Girka <thib@sitedethib.com> parents: 236 diff changeset	118 and 0 <= shotsptr - data_va < data_size - 36*nb_shots):
2876c267be00 Add heuristics to extract character data from the demo .exe. Thibaut Girka <thib@sitedethib.com> parents: 236 diff changeset	119 break
2876c267be00 Add heuristics to extract character data from the demo .exe. Thibaut Girka <thib@sitedethib.com> parents: 236 diff changeset	120 # Check if everything is fine...
230 1c24a6d93c1b Improve find_character_defs, clean up a bit, and disable attack types 2 and 3 for now Thibaut Girka <thib@sitedethib.com> parents: 229 diff changeset	121 if not (0 <= shtptr1 - data_va < data_size - 12
261 2876c267be00 Add heuristics to extract character data from the demo .exe. Thibaut Girka <thib@sitedethib.com> parents: 236 diff changeset	122 and 0 <= shtptr2 - data_va < data_size - 12
2876c267be00 Add heuristics to extract character data from the demo .exe. Thibaut Girka <thib@sitedethib.com> parents: 236 diff changeset	123 and 0 < nb_shots <= 1000
230 1c24a6d93c1b Improve find_character_defs, clean up a bit, and disable attack types 2 and 3 for now Thibaut Girka <thib@sitedethib.com> parents: 229 diff changeset	124 and 0 <= power < 1000
1c24a6d93c1b Improve find_character_defs, clean up a bit, and disable attack types 2 and 3 for now Thibaut Girka <thib@sitedethib.com> parents: 229 diff changeset	125 and 0 <= shotsptr - data_va < data_size - 36*nb_shots):
229 5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	126 break
230 1c24a6d93c1b Improve find_character_defs, clean up a bit, and disable attack types 2 and 3 for now Thibaut Girka <thib@sitedethib.com> parents: 229 diff changeset	127
1c24a6d93c1b Improve find_character_defs, clean up a bit, and disable attack types 2 and 3 for now Thibaut Girka <thib@sitedethib.com> parents: 229 diff changeset	128 else:
1c24a6d93c1b Improve find_character_defs, clean up a bit, and disable attack types 2 and 3 for now Thibaut Girka <thib@sitedethib.com> parents: 229 diff changeset	129 # XXX: Obscure python feature! This only gets executed if the
1c24a6d93c1b Improve find_character_defs, clean up a bit, and disable attack types 2 and 3 for now Thibaut Girka <thib@sitedethib.com> parents: 229 diff changeset	130 # XXX: loop ended without a break statement.
1c24a6d93c1b Improve find_character_defs, clean up a bit, and disable attack types 2 and 3 for now Thibaut Girka <thib@sitedethib.com> parents: 229 diff changeset	131 # In our case, it's only executed if all the 4 character
1c24a6d93c1b Improve find_character_defs, clean up a bit, and disable attack types 2 and 3 for now Thibaut Girka <thib@sitedethib.com> parents: 229 diff changeset	132 # definitions are considered valid.
229 5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	133 yield addr
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	134
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	135
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	136 @classmethod
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	137 def read(cls, file):
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	138 pe_file = PEFile(file)
261 2876c267be00 Add heuristics to extract character data from the demo .exe. Thibaut Girka <thib@sitedethib.com> parents: 236 diff changeset	139 data_section = [section for section in pe_file.sections
2876c267be00 Add heuristics to extract character data from the demo .exe. Thibaut Girka <thib@sitedethib.com> parents: 236 diff changeset	140 if section.Name.startswith('.data')][0]
2876c267be00 Add heuristics to extract character data from the demo .exe. Thibaut Girka <thib@sitedethib.com> parents: 236 diff changeset	141 text_section = [section for section in pe_file.sections
2876c267be00 Add heuristics to extract character data from the demo .exe. Thibaut Girka <thib@sitedethib.com> parents: 236 diff changeset	142 if section.Name.startswith('.text')][0]
2876c267be00 Add heuristics to extract character data from the demo .exe. Thibaut Girka <thib@sitedethib.com> parents: 236 diff changeset	143 data_va = pe_file.image_base + data_section.VirtualAddress
2876c267be00 Add heuristics to extract character data from the demo .exe. Thibaut Girka <thib@sitedethib.com> parents: 236 diff changeset	144 data_size = data_section.SizeOfRawData
2876c267be00 Add heuristics to extract character data from the demo .exe. Thibaut Girka <thib@sitedethib.com> parents: 236 diff changeset	145 text_va = pe_file.image_base + text_section.VirtualAddress
2876c267be00 Add heuristics to extract character data from the demo .exe. Thibaut Girka <thib@sitedethib.com> parents: 236 diff changeset	146 text_size = text_section.SizeOfRawData
229 5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	147
298 92a6fd2632f1 Improve heuristic to filter out non-game exes (like custom.exe). Thibaut Girka <thib@sitedethib.com> parents: 261 diff changeset	148 possible_character_records = list(cls.find_character_defs(pe_file))
92a6fd2632f1 Improve heuristic to filter out non-game exes (like custom.exe). Thibaut Girka <thib@sitedethib.com> parents: 261 diff changeset	149 if not possible_character_records:
92a6fd2632f1 Improve heuristic to filter out non-game exes (like custom.exe). Thibaut Girka <thib@sitedethib.com> parents: 261 diff changeset	150 raise InvalidExeException
92a6fd2632f1 Improve heuristic to filter out non-game exes (like custom.exe). Thibaut Girka <thib@sitedethib.com> parents: 261 diff changeset	151
92a6fd2632f1 Improve heuristic to filter out non-game exes (like custom.exe). Thibaut Girka <thib@sitedethib.com> parents: 261 diff changeset	152 character_records_va = possible_character_records[0]
229 5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	153
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	154 characters = []
235 e59bd7979ddc Do a little cleanup, and fix PCB SHT usage. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: 230 diff changeset	155 shots_offsets = {}
229 5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	156 for character in xrange(4):
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	157 sht = cls()
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	158
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	159 pe_file.seek_to_va(character_records_va + 64character)
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	160
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	161 data = unpack('<4f2I', file.read(6*4))
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	162 (speed, speed_focused, speed_unknown1, speed_unknown2,
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	163 shots_func_offset, shots_func_offset_focused) = data
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	164
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	165 sht.horizontal_vertical_speed = speed
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	166 sht.horizontal_vertical_focused_speed = speed_focused
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	167 sht.diagonal_speed = speed * SQ2
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	168 sht.diagonal_focused_speed = speed_focused * SQ2
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	169
235 e59bd7979ddc Do a little cleanup, and fix PCB SHT usage. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: 230 diff changeset	170 # Characters might have different shot types whether they are
e59bd7979ddc Do a little cleanup, and fix PCB SHT usage. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: 230 diff changeset	171 # focused or not, but properties read earlier apply to both modes.
e59bd7979ddc Do a little cleanup, and fix PCB SHT usage. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: 230 diff changeset	172 focused_sht = copy(sht)
e59bd7979ddc Do a little cleanup, and fix PCB SHT usage. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: 230 diff changeset	173 characters.append((sht, focused_sht))
229 5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	174
235 e59bd7979ddc Do a little cleanup, and fix PCB SHT usage. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: 230 diff changeset	175 for sht, func_offset in ((sht, shots_func_offset), (focused_sht, shots_func_offset_focused)):
261 2876c267be00 Add heuristics to extract character data from the demo .exe. Thibaut Girka <thib@sitedethib.com> parents: 236 diff changeset	176 # Search for the “push” instruction
2876c267be00 Add heuristics to extract character data from the demo .exe. Thibaut Girka <thib@sitedethib.com> parents: 236 diff changeset	177 for i in xrange(20):
2876c267be00 Add heuristics to extract character data from the demo .exe. Thibaut Girka <thib@sitedethib.com> parents: 236 diff changeset	178 # Find the “push” instruction
2876c267be00 Add heuristics to extract character data from the demo .exe. Thibaut Girka <thib@sitedethib.com> parents: 236 diff changeset	179 pe_file.seek_to_va(func_offset + i)
2876c267be00 Add heuristics to extract character data from the demo .exe. Thibaut Girka <thib@sitedethib.com> parents: 236 diff changeset	180 instr, offset = unpack('<BI', file.read(5))
2876c267be00 Add heuristics to extract character data from the demo .exe. Thibaut Girka <thib@sitedethib.com> parents: 236 diff changeset	181 if instr == 0x68 and 0 <= offset - data_va < data_size - 12:
2876c267be00 Add heuristics to extract character data from the demo .exe. Thibaut Girka <thib@sitedethib.com> parents: 236 diff changeset	182 pe_file.seek_to_va(offset)
2876c267be00 Add heuristics to extract character data from the demo .exe. Thibaut Girka <thib@sitedethib.com> parents: 236 diff changeset	183 nb_shots, power, shotsptr = unpack('<III', pe_file.file.read(12))
2876c267be00 Add heuristics to extract character data from the demo .exe. Thibaut Girka <thib@sitedethib.com> parents: 236 diff changeset	184 if (0 < nb_shots <= 1000
2876c267be00 Add heuristics to extract character data from the demo .exe. Thibaut Girka <thib@sitedethib.com> parents: 236 diff changeset	185 and 0 <= power < 1000
2876c267be00 Add heuristics to extract character data from the demo .exe. Thibaut Girka <thib@sitedethib.com> parents: 236 diff changeset	186 and 0 <= shotsptr - data_va < data_size - 36*nb_shots):
2876c267be00 Add heuristics to extract character data from the demo .exe. Thibaut Girka <thib@sitedethib.com> parents: 236 diff changeset	187 break
235 e59bd7979ddc Do a little cleanup, and fix PCB SHT usage. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: 230 diff changeset	188 if offset not in shots_offsets:
e59bd7979ddc Do a little cleanup, and fix PCB SHT usage. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: 230 diff changeset	189 shots_offsets[offset] = []
e59bd7979ddc Do a little cleanup, and fix PCB SHT usage. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: 230 diff changeset	190 shots_offsets[offset].append(sht)
229 5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	191
235 e59bd7979ddc Do a little cleanup, and fix PCB SHT usage. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: 230 diff changeset	192 for shots_offset, shts in shots_offsets.iteritems():
229 5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	193 pe_file.seek_to_va(shots_offset)
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	194
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	195 level_count = 9
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	196 levels = []
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	197 for i in xrange(level_count):
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	198 shots_count, power, offset = unpack('<III', file.read(3*4))
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	199 levels.append((shots_count, power, offset))
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	200
235 e59bd7979ddc Do a little cleanup, and fix PCB SHT usage. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: 230 diff changeset	201 shots = {}
229 5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	202
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	203 for shots_count, power, offset in levels:
235 e59bd7979ddc Do a little cleanup, and fix PCB SHT usage. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: 230 diff changeset	204 shots[power] = []
229 5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	205 pe_file.seek_to_va(offset)
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	206
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	207 for i in xrange(shots_count):
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	208 shot = Shot()
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	209
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	210 data = unpack('<HH6fHBBhh', file.read(36))
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	211 (shot.interval, shot.delay, x, y, hitbox_x, hitbox_y,
230 1c24a6d93c1b Improve find_character_defs, clean up a bit, and disable attack types 2 and 3 for now Thibaut Girka <thib@sitedethib.com> parents: 229 diff changeset	212 shot.angle, shot.speed, shot.damage, shot.orb, shot.type,
229 5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	213 shot.sprite, shot.unknown1) = data
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	214
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	215 shot.pos = (x, y)
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	216 shot.hitbox = (hitbox_x, hitbox_y)
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	217
235 e59bd7979ddc Do a little cleanup, and fix PCB SHT usage. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: 230 diff changeset	218 shots[power].append(shot)
e59bd7979ddc Do a little cleanup, and fix PCB SHT usage. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: 230 diff changeset	219
e59bd7979ddc Do a little cleanup, and fix PCB SHT usage. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: 230 diff changeset	220 for sht in shts:
e59bd7979ddc Do a little cleanup, and fix PCB SHT usage. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: 230 diff changeset	221 sht.shots = shots
229 5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	222
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	223
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	224 return characters
5afc75f71fed Add “SHT” support to EoSD, and do a little cleanup. Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> parents: diff changeset	225

Mercurial > touhou

annotate pytouhou/formats/exe.py @ 298:92a6fd2632f1